Injector for introducing contrast agents into blood vessels



FIG. 1 is a perspective view of an injector for introducing contrast agents into blood vessels, showing my new design;

FIG. 2 is a rear end elevational view thereof;

FIG. 3 is a front end elevational view thereof;

FIG. 4 is a top plan view thereof, the bottom view being identical thereto;

FIG. 5 is a side elevational view thereof, the opposite side being identical thereto. 

The ornamental design for an injector for introducing contrast agents into blood vessels, as shown. 